19877220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10039}}^1$

素因数の和:10065

約数の個数: 72

約数和(自身を含む): 65782080

約数和(自身を除く): 45904860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10039, 20078, 30117, 40156, 50195, 60234, 90351, 100390, 110429, 120468, 150585, 180702, 200780, 220858, 301170, 331287, 361404, 441716, 451755, 552145, 602340, 662574, 903510, 993861, 1104290, 1325148, 1656435, 1807020, 1987722, 2208580, 3312870, 3975444, 4969305, 6625740, 9938610, 19877220]

約数ペア:

[(1, 19877220), (2, 9938610), (3, 6625740), (4, 4969305), (5, 3975444), (6, 3312870), (9, 2208580), (10, 1987722), (11, 1807020), (12, 1656435), (15, 1325148), (18, 1104290), (20, 993861), (22, 903510), (30, 662574), (33, 602340), (36, 552145), (44, 451755), (45, 441716), (55, 361404), (60, 331287), (66, 301170), (90, 220858), (99, 200780), (110, 180702), (132, 150585), (165, 120468), (180, 110429), (198, 100390), (220, 90351), (330, 60234), (396, 50195), (495, 40156), (660, 30117), (990, 20078), (1980, 10039)]